NSK JM 734449 tapered roller bearing cone
- Brand
- NSK
- Category
- Bearings
- Subcategory
- Tapered roller bearings
We reply promptly.
Tell us the quantity you need and request a quote by WhatsApp or email.
Other brands for this category
Ask us for alternatives. We check every equivalent against the part number and your application.
Can't find the exact model? Tell us the part number or model you need. We'll track it down and quote it, whether or not it appears in our catalog.
Description
NSK JM 734449 belongs to tapered roller bearing cone, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for JM 734449 and any equivalents.
A tapered roller bearing cone is the inner assembly: inner ring, rollers and cage. It works together with the cup, the outer ring, to handle combined radial and axial forces. NSK's JM series is built for demanding, rigid applications such as gearboxes, wheel axles and transmission equipment. Need a specific cone? Give us the part number and MR will quote it.
The JM prefix tells you which series the cone belongs to, and the digits that follow identify its size and geometry. JM 734449, JM 738249 and JM 822049 are three examples from the same series with different dimensions. To pick the right one, read the full number stamped on the old bearing or listed in the equipment manual.
You'll find these cones in steel mills, food processing, mining and plastics plants, on conveyors, mills, presses and machine tools. They handle combined loads and tolerate slight misalignment, which is why power transmission setups rely on them so often.
Before mounting, check that cone and cup are clean and free of burrs. Lubricate with the grease or oil the equipment maker specifies, then verify axial clearance after adjustment. Cone and cup must align precisely, or wear will set in early. In dirty environments, add seals. Follow the maintenance manual.
Tapered roller bearings follow interchangeability standards, so a cone from one brand can pair with a cup from another when dimensions and angle match. Even so, replacing the complete assembly is the safer route. If you only have another brand's number, MR can identify the equivalent.
For a quote on an NSK JM series cone, send the full part number (JM 734449, for instance) or your equipment measurements on WhatsApp. We'll also advise on mounting and lubrication.
Dimensions
Dimensions and tolerances: Message us the part number on WhatsApp and we'll verify its dimensions and version with the manufacturer's datasheet.
Frequently asked questions
- What's the difference between a cone and a cup?
- The cone is the inner ring with rollers and cage; the cup is the outer ring. They mount separately but form one assembly, and both are usually replaced together.
- How do I find the right NSK JM cone for my equipment?
- Check the number etched on the old bearing or in the manual. If it's gone, send us shaft and housing measurements on WhatsApp and we'll quote the exact part number.
- Can I use an NSK cone with a cup from another brand?
- Yes, if dimensions and angle are compatible. Tapered roller bearings are interchangeable under standards, but we still suggest replacing the complete assembly.